Comparator circuits with local ramp buffering for a column-parallel single slope ADC
Abstract
A comparator circuit suitable for use in a column-parallel single-slope analog-to-digital converter comprises a comparator, an input voltage sampling switch, a sampling capacitor arranged to store a voltage which varies with an input voltage when the sampling switch is closed, and a local ramp buffer arranged to buffer a global voltage ramp applied at an input. The comparator circuit is arranged such that its output toggles when the buffered global voltage ramp exceeds the stored voltage. Both DC- and AC-coupled comparator embodiments are disclosed.
- Inventors:
- Issue Date:
- Research Org.:
- Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1248813
- Patent Number(s):
- 9325335
- Application Number:
- 14/523,179
- Assignee:
- TELEDYNE SCIENTIFIC & IMAGING, LLC (Thousand Oaks, CA)
- Patent Classifications (CPCs):
-
H - ELECTRICITY H03 - BASIC ELECTRONIC CIRCUITRY H03K - PULSE TECHNIQUE
H - ELECTRICITY H03 - BASIC ELECTRONIC CIRCUITRY H03M - CODING
- DOE Contract Number:
- AC04-94AL85000
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 2014 Oct 24
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 42 ENGINEERING; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
Citation Formats
Milkov, Mihail M. Comparator circuits with local ramp buffering for a column-parallel single slope ADC. United States: N. p., 2016.
Web.
Milkov, Mihail M. Comparator circuits with local ramp buffering for a column-parallel single slope ADC. United States.
Milkov, Mihail M. Tue .
"Comparator circuits with local ramp buffering for a column-parallel single slope ADC". United States. https://www.osti.gov/servlets/purl/1248813.
@article{osti_1248813,
title = {Comparator circuits with local ramp buffering for a column-parallel single slope ADC},
author = {Milkov, Mihail M.},
abstractNote = {A comparator circuit suitable for use in a column-parallel single-slope analog-to-digital converter comprises a comparator, an input voltage sampling switch, a sampling capacitor arranged to store a voltage which varies with an input voltage when the sampling switch is closed, and a local ramp buffer arranged to buffer a global voltage ramp applied at an input. The comparator circuit is arranged such that its output toggles when the buffered global voltage ramp exceeds the stored voltage. Both DC- and AC-coupled comparator embodiments are disclosed.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2016},
month = {4}
}
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